Wehrli Custom Fabrication WCF100412-KIWI High Flow Turbo Intake Horn 4.8in Cast Aluminum Kiwi

The Wehrli Custom Fabrication WCF100412 High Flow Turbo Intake Horn is a precision CNC-machined cast aluminum upgrade designed to replace the restrictive OEM plastic turbo inlet. Finished in Wehrli's signature Kiwi custom powder coat, this intake horn delivers a significant boost in airflow efficiency and throttle response.

Engineered with a massive 4.8-inch inlet — the largest intake horn available for this application — the WCF100412 provides a 20% improvement in airflow over stock, helping your turbocharger breathe more freely and spool more efficiently. The factory resonator is eliminated, resulting in a more aggressive turbo and engine sound.

Key Features:

• 4.8" inlet — largest intake horn on the market for this platform
• 20% improvement in airflow versus stock OEM inlet
• CNC machined cast aluminum construction for strength and precision fitment
• Includes integrated PCV port to retain crankcase ventilation
• Eliminates factory resonator connection for improved sound and airflow
• Includes silicone reducer boot, stainless steel T-bolt clamps, and O-ring seal
• Custom Kiwi powder coat finish — coated in-house by Wehrli Custom Powder Coating
• Made in the USA

What's Included:

• 3-1/2" / 4.8" intake horn
• Silicone reducer boot
• Stainless steel T-bolt clamps
• O-ring seal

Compatibility Note: This intake horn is not compatible with OEM or aftermarket intakes (such as K&N) that do not use a silicone boot connection at the horn. The intake pipe must accept a 4" boot and clamp for proper fitment. Designed to complement WCFab Stage 1 LBZ & LMM Intake Kits.

Supersedes: WCF100341  |  Replaces GM Part Number: 98011738